Nepean Bay Weather Forecast

    • 11
    • 24

    Showers increasing

    • 12
    • 23

    Possible shower

    • 8
    • 23

    Shower or two

    • 11
    • 23

    Shower or two

    • 8
    • 22

    Possible shower

    • 9
    • 20

    Shower or two

    • 7
    • 20

    Cloudy

Today 30 Oct Kangaroo Island

Partly cloudy. Very high chance of showers from late this morning. The chance of a thunderstorm during this afternoon and evening. Winds northeasterly 20 to 30 km/h turning north to northwesterly 25 to 40 km/h during the day. Daytime maximum temperatures in the low to mid 20s.

Investigator Strait Coastal Waters

Wind
Northeasterly 15 to 20 knots turning north to northwesterly in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
West to southwesterly below 1 metre.
Weather
Partly cloudy. 90% chance of showers from late this morning. The chance of a thunderstorm during this afternoon and evening.
Weather Situation
A ridge of high pressure lies over eastern parts of SA, while a low pressure system in WA extends a trough into the west. The low and trough will move across the state on Friday, clearing to the east by Saturday morning as a new high pressure system briefly settles over SA. Another low is expected to enter from the west on Sunday, moving over central and eastern parts on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

October Temperature

Kingscote Airport (7 km)

  • Lowest 28 October, 2026

    2.5 °C

  • Average October

    14.4 °C

  • Highest 22 October, 2026

    28.4 °C

Climate (2021–2026)

Kingscote Airport (7 km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
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